Engine-valve.



Patented Marf26, 1912.

I R. WINTZER.

V ENGINE VALVE.

I l. APPLICATION FILED M124, 190e. 1,021,438.

Q A pv@ UNITED STATES PATENT OFFICE.

RUDOLF WINTZER, OF MILWAUKEE, WISCONS'IN, ASSIGNOB. TO ,POWER AND MINING `MACHINERY COMPAN'Y, OF NEW YORK, N. YJA CORPORATION OF NEW JERSEY.

ENGINE-VALVE.

Patented Mar. 26, 1912.

To all whom 'it may concern:

Be it known that I, RUDOLF WINTzER, a subject of the Emperor of Germany, resid ying at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented 'certain new and useful Improvements in Engine-Valves, of which the followingis a specification, reference being had therein to the accompanying drawing.

This invention relates to valves and espei cially to the exhaust valves of internal com` valve and so much of an engine cylinder as is necessary to illustratethe/applicatlon of' -the valve thereto. .Fig. .2 is a transverse section on the line 2 2 of Fig. 1. ,'Figs. 3 and 4 are cross sectional views taken on the lines 3 3 and 4 4, respectively, of Fig. 1.

Referring tothe accompanying drawings, the cylinder, A, ofthe engine is provided with an exhaust duct, B, controlled by a valve, C, mounted to slide upon a bearing, D, supported by the cylinder.

Referring to the parts in detail, a valve seat, 1, is mounted in the exhaust duct, B. This seat has a fiat face for engagement with the valve, as shown. The valve, C, isfhol-f low and within it extends the bearing, D.v To prevent the gases from the du'ct, B, from coming in contact with the bearing for the valve, packing, 2, is interposed4 between the valve bearing and the duct and in this case-v the packing is arrangedupon the exteriorof the valve between 1t and a wall, 3.' The arrangement of the bearing upon the interior ,of the` valve and thefpacking upon the exterior thereof, enables the construction to be considerably shortened. This wall might be the interior of the valve -cavity vin the cylinder but in ,the present instance is shown as separate therefrom and formed inte al with the bearing, D. It is possible t atA some of the gases from theduct might leak by the packing, 2, and eventually find their way to the valve bearing. To prevent this a channel, 4, inclosed bythe valve and its 5 adjacent wall, is provided,'the said channel bears.

being connected with the exhaust duct outside the port by means of an outlet, 5. A packing 6 is interposed between the channel and the valve bearing to confine the gases wit-hin the channel until they are discharged through the outlet.` 'It will now be seen that any gases which may find their way by the packing, 2, to the channel will be conned therein' by reason of the packing, 2, uponone Vside and the packing, 6, upon the other. It is a further important result of thus intercepting the exhaust gases lthat one side of the valve may be exposed to the'l atmosphere without danger of the gases leak- .ing into the engine room.

Within the valve is'formed a chamber, 7 whlch is separatedfrom the interior surface o'f the valve, and therefore from t-he bear ing surface, by but a thin partition. This. chamber is for the purpose of receiving a cooling fluid, such as water, which may be admitted to'the chamber at the bottom by means of a passage, 8, and a connector, 12,

adapted to receive-a exible cou ling whichl will permit the valve to move fieely. -The p fluid has its exit through a passage, 13, connected by o enings, 14, with the top of the valve cham er. The passage, ,13, maybe provided with a connector and flexible coupling, as illustrated in connection with the lngress passage.

It is to be observed that the chamber, `7,' for the coolingv fluid,- is. substantially coextensive with the valve and forms a coolingjacket betwee'n the gases of the exhaust passage and. the valve' bearing. Moreover the cooling Huid coming into close proximity to the bearing maintains it in a cool condi- -tion, thereby facilitating. and preserving its lubrication. It is also to be observed 'that with the arrangement whereby kthe cooling :fluid enters at the lowest point of the valve chamber' and.is withdrawn from the top thereof, a perfect circulation of water in the valve is secured and the formation of steam or hot water pockets is avoided:

A compression spring, 15,ftnds te pressthe valve against its seat `and the valve is lifted from its seat by pressure exerted upon the end opposite that "upon which the spring This is 4an mportantfeature for it would be prohibitive to form the valve in an other manner than casting and, as is wel known, cast iron `or other metal is exceedingly unreliable when placed under tension. Where, therefore, the movement of the valve is effected by placing any of its parts under tension, those arts must be made extremely large `and eavy. When, however, as in the present case, the valve is moved by placing the parts under compression, they can be reduced in size to a very considerable extent, thereby reducing the weight and cost of the valve as well as increasing its durability.by.relieving it of the lwear incidental to considerable weight of the parts. In the drawings, the mean for creating pressure upon the end of the alve to lift itfrom its seat, is shown as a plate, 16, secured to the end of the valve and to a rod, 17, of steel or other suitable tension-withstanding material, which extends through a passage, 18, in the bearing, D, and at its outer end is engaged by any lsuitable means for placing the rod, 17, under tension to lift the valve, which means may be so connected withother portions of the engine as to be operated at the proper times. Both the means and the connections may be of any suitable form, many of which are well lmown in the art. In order that the rod, 17, may spring slightly in order to conform to variations in alinement of the various bearings of the valve seat, it may be reduced in section at 19, as shown.

It is to be observed that in the construction shown, none Aof the parts extend into the exhaust passage be ond the valve seat and the retardation o the exhaust gases and back pressure in the cylinder which would thereby be caused are avoided." It

is further to be observed that all of the bear- 'ing surfacesv are protected from contact with lthe exhaust gases and thereby the destruction ofthe lubrication and corrosion and deteriorationof those surfaces -is avoided.

While the invention has been illustrated in what is considered its best application, it may be embodied in other structures without departing from the' spirit of the invention. The -invention should not, therefore, be limited to the vstructure shown.

A What I claim and desire to secure by Letters Patent, is: l

1. The combination with aV duct, of a valve in said duct, a bearing for said valve upon the interior thereof and means upon the exterior of said valve for preventin the passage of fluid from the duct to the earm g. i 2. The combination 'with a duct, of a within the same,.a wal1 exterior to the valve and packingbetween the exterior of said valve and said' wall.

3. The combination with a duct, of a valve in said duct, a bearing for the valve, a wall surrounding said valve, said wall and valve inclosing a channel located between said bea-ring and that part of said duct on the intake side of the valve seat, packing between said valve and wall upon cach side of said channel and an outlet for said channel opening into that part of the duct on the discharge side of the valve seat.

4. The combination with a duct having a valve cavity, of a valve bearing extending into the cavity and separated from the walls thereofa valve closure movably mounted within the cavity and on the bearing toencircle it, the said valve closure having a chamber which surrounds the bearing and which is surrounded by the walls of the valve cavity, a valve seat arranged to be engagedby the valve closure to close the duct, and means for supplying a cooling fiuid to the chamberin the valve closure.

5. The combination with a duct f, a hollow valve therein, an interior bearing projecting within said valve, a chamber for cooling Huid' within said valve and encircling said bearing and means for supplying fluid .to said chamber and withdrawing it from said chamber in a continuous circulatory passage independent of said duct.

6. The combination with a valve of cast metal, of a seatI therefor, an interior hollow bearing projecting within said valve, means bearing upon one end of the valve tending to press the valve against its seat, and an elongated flexible rod connected to the other end of the Valve and extending through said hollow bearing and adapted to be connected at its other end to valve operating mechanism, substantially as set forth.

7. The combination with a valve of cast metal of -a seat therefor, means bearing upon one end of the valve tending to press the valve against its seat, means parallel to the valve and constructed of tension-withstanding material adapted to engage with the other end of the valve and extending away from the valve in the same direction as does the pressingmeans and means for placing the last mentioned means under tension to lift the Valve from its seat.

8. The combination with a hollow valve of a seat therefor, a bearing for the valve extending within the same, said bearing having a passage, means bearing upon one end of the valve tending to press it against its seat and a rod adapted to be connected to valve operating mechanism extending through the passage in the bearing and adapted to engage with the other end of the valve. valve, a bearing for the valve extending 9. The combination with a hollow valve of 'a seat therefor, a bearing for the valve extending within the same, said bearing having a passage, means bearingupon one end of the valve tending to press it against its seat and a rod having a reduced section extending through the passage in the bearing and adapted to enga e with the other end of the valve said rod eing made of flexible its seat,.packing between said Wall and said valve, a rod for lifting the valve from its seat extending through the passage in the bearing and adapted to engage with the` other end of the valve and means for placing the rod under tensioni 11. The combination with a valve of cast metal of a seat therefor, means bearing upon one end of the valve tending to press the valve against its seat, means paralielto the valve and constructed of steel ada ted to engage with the other end of the va. ve and extending away' from the valve in the same direction as does the pressing means and meansfor placing the last means under tension to -lift the Valve from its seat.

12.` The combination with a valve ofcast metal, `of a seat therefor, means for normally pressing said valve against said seat, and means bearing, against the end of the valve adjacent the seat and extending away from the seat onthe intake side for lifting 'the said valve from Vits seat, said valve being' supported entirely on the intake side of its seat. i Y v In testimony whereof I aiix my ,signaf ture, in presence of two witnesses.

. RUDOLF WINTZER Witnesses: Y 

